Good for my use Rated 5 out of 5 stars

This is great. Now I can read markdown offline right from Firefox :)

Does a great job. Would be nice if it had some extended markdown formatting Rated 4 out of 5 stars

I use this mainly to view github readme's. Github uses slightly nonstandard markdown, and while I don't expect url links to work properly, task lists would be a nice addition to this.

Excelent!! Rated 5 out of 5 stars

It works like a charm!

nice! Rated 5 out of 5 stars

saves me time from running a python simpleserver

Why it didn't work on my Firefox Rated 4 out of 5 stars

After install the plug-in, I drag a *.md file to the Firefox browser while the browser prompt a window to ask open the file with another application or "save as".
Is anything wrong about my operation?
Any help will be appreciate, Thanks!

Little tweak needed Rated 4 out of 5 stars

Very good extension. However, one little remark:
`Inline code` has a different font size than code block (lines between ```) , which doesn't look nice.

Works perfectly, looks great. Rated 5 out of 5 stars

I'm using it to view just text in markdown, and it works great for that! It formatting is really pleasant looking as well. Clean, simple, and quick.

Does not work with custom content-type. Rated 2 out of 5 stars

As a developer, I would like to be able to view a page that has the header "Content-type: text/markdown" (official MIME-type since March 2016) as a Markdown document. Unfortunately, that does not work.

I have a separate Markdown reader (MacDown) for reading and making .md files. So too bad, not useful for me.

could not display local image Rated 4 out of 5 stars

could not display local image in windows

Works perfectly Rated 5 out of 5 stars

This plugin works instant. I have no problems at all + local files work perfectly fine aswell.

works great. while need feature of catalogue display. Rated 4 out of 5 stars

works great. while need feature of catalogue display.
@the former reviewer, opening local file works without problem at my side.

Does not work with local files Rated 2 out of 5 stars

It is too bad it does not work with local files.

Very useful plugin Rated 5 out of 5 stars

I just installed and it works like a charm!

This review is for a previous version of the add-on (1.10). 

Do what it says Rated 5 out of 5 stars

Nice little add-on. Do exactly what's advertised.

Great addition to Firefox/Iceweasel if you need to visualize Markdown files from ftp servers or http directories.

Only one minor issue: the page title (as displayed in the application title bar) is made of the first characters of the file. With inelegant results when the Mardown file start with an "underline" style header -- in that case, you end up having a bunch of ========== in the title.

This review is for a previous version of the add-on (1.8.1-signed). 

Very handy Rated 5 out of 5 stars

Simple, powerful.

This review is for a previous version of the add-on (1.8.1-signed). 

Works well with Commonmark and GitHub Rated 5 out of 5 stars

Formats .md files I open from my local file system and README.md files I load by clicking the Raw button on GitHub.

This review is for a previous version of the add-on (1.8.1-signed). 

Just works Rated 5 out of 5 stars

Thanks for developing this add-on. This just works and the rendered output is clean!

This review is for a previous version of the add-on (1.8.1-signed). 

Do what it say to do Rated 5 out of 5 stars

I'm using on Firefox 41.0.1 and I haven't any problem. Works good, easy and soft.
Thanks for all. :)

This review is for a previous version of the add-on (1.8.1-signed). 

Which markdown syntax is supported? Rated 4 out of 5 stars

There are multiple flavors of markdown syntax. I did not find information about which syntax is supported by the addon, neither on this addon page, nor on the project page. That would be helpful to have.
Andy

This review is for a previous version of the add-on (1.8.1-signed). 

Great for doc snippets Rated 4 out of 5 stars

For small documentation snippets it is a great tool, better than raw text files, because the relevant constructs are supported and look nice: images, simple tables, code, pre, bold, italic, etc.

It is not so great for bigger documents, as in-document-references are not supported. It autogenerates the ids for the headings ‒ #foo becomes <h1 id="foo">foo</h1> ‒ but it wont generate the href attribute on links ‒ [go to foo](#foo) becomes <a>go to foo</a>. Worse, using raw html links will also not work. From <a href="#foo">foo</a> it removes the href attribute! A workaround to prevent scroll scroll is the HeadingsMap Addon.

Other Issues:
It adds an unnecessary outermost div.container.
The css adds margins on left and right side. This can be fixed by editing the css in the xpi of this extension in the firefox profiles folder).
The title of the tab shows the contents of more than the first line of the md file (eg. '<title>======= loremipsum').

This review is for a previous version of the add-on (1.8.1-signed).